The biggest AI story this weekend isn't a new chatbot. It's how fast open models are closing the gap, and how shaky the benchmark numbers behind the hype are.

1. Kimi K3.1 Pro is now 3 points from the frontier

Moonshot's new model scores 55 on the Artificial Analysis Intelligence Index — 4th out of 215 models, behind only Claude Opus 5.5 and Sonnet. On Terminal-Bench 4.0 it hits 65.7%, basically tied with Opus 5.5 (66.4%) and ahead of GPT-6 Astra (58.2%). Price: $2/$10 per million tokens, half of Opus. Full weights are promised by Nov 4 — if that lands, it's the highest-scoring open-weight model ever, and the open-vs-closed gap shrinks from 12 points to 3.

The part worth watching: Moonshot deliberately trimmed the model's cyber capability before release (internal exploit bench 90.5% → 81.0%). Open weights anyone can fine-tune, with the maker publicly debating what a release owes defenders. That's new.

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